Java GLES10.glBindTexture方法代碼示例

import android.opengl.GLES10; //導入方法依賴的package包/類
@Override
	public void draw(final int texId, final float[] tex_matrix, final int offset) {
		// FIXME Matrixを適用
		GLES10.glEnableClientState(GLES10.GL_VERTEX_ARRAY);
		pVertex.position(0);
		GLES10.glVertexPointer(2, GLES10.GL_FLOAT, VERTEX_SZ, pVertex);
//--------------------------------------------------------------------------------
		GLES10.glEnableClientState(GLES10.GL_TEXTURE_COORD_ARRAY);
		pTexCoord.position(0);
		GLES10.glTexCoordPointer(VERTEX_NUM, GLES10.GL_FLOAT, VERTEX_SZ, pTexCoord);
		GLES10.glActiveTexture(GLES10.GL_TEXTURE0);
		GLES10.glBindTexture(mTexTarget, texId);
//--------------------------------------------------------------------------------
		GLES10.glDrawArrays(GLES10.GL_TRIANGLE_STRIP, 0, VERTEX_NUM);
//--------------------------------------------------------------------------------
		GLES10.glBindTexture(mTexTarget, 0);
		GLES10.glDisableClientState(GLES10.GL_TEXTURE_COORD_ARRAY);
//--------------------------------------------------------------------------------
		GLES10.glDisableClientState(GLES10.GL_VERTEX_ARRAY);
	}
 

import android.opengl.GLES10; //導入方法依賴的package包/類
/**
	 * テクスチャ名を生成
	 * @param texTarget
	 * @param texUnit テクスチャユニット, GL_TEXTURE0...GL_TEXTURE31
	 * @param min_filter テクスチャの補間方法を指定, GL_LINEARとかGL_NEAREST
	 * @param mag_filter テクスチャの補間方法を指定, GL_LINEARとかGL_NEAREST
	 * @param wrap テクスチャのクランプ方法, GL_CLAMP_TO_EDGE
	 * @return
	 */
	public static int initTex(final int texTarget, final int texUnit, final int min_filter, final int mag_filter, final int wrap) {
//		if (DEBUG) Log.v(TAG, "initTex:target=" + texTarget);
		final int[] tex = new int[1];
		GLES10.glActiveTexture(texUnit);
		GLES10.glGenTextures(1, tex, 0);
		GLES10.glBindTexture(texTarget, tex[0]);
		GLES10.glTexParameterx(texTarget, GLES10.GL_TEXTURE_WRAP_S, wrap);
		GLES10.glTexParameterx(texTarget, GLES10.GL_TEXTURE_WRAP_T, wrap);
		GLES10.glTexParameterx(texTarget, GLES10.GL_TEXTURE_MIN_FILTER, min_filter);
		GLES10.glTexParameterx(texTarget, GLES10.GL_TEXTURE_MAG_FILTER, mag_filter);
		return tex[0];
	}
 

import android.opengl.GLES10; //導入方法依賴的package包/類
public static int loadTextureFromResource(final Context context, final int resId) {
	// Create an empty, mutable bitmap
	final Bitmap bitmap = Bitmap.createBitmap(256, 256, Bitmap.Config.ARGB_8888);
	// get a canvas to paint over the bitmap
	final Canvas canvas = new Canvas(bitmap);
	canvas.drawARGB(0,0,255,0);

	// get a background image from resources
	// note the image format must match the bitmap format
	final Drawable background = context.getResources().getDrawable(resId);
	background.setBounds(0, 0, 256, 256);
	background.draw(canvas); // draw the background to our bitmap

	final int[] textures = new int[1];

	//Generate one texture pointer...
	GLES10.glGenTextures(1, textures, 0);
	//...and bind it to our array
	GLES10.glBindTexture(GLES10.GL_TEXTURE_2D, textures[0]);

	//Create Nearest Filtered Texture
	GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, GLES10.GL_TEXTURE_MIN_FILTER, GLES10.GL_NEAREST);
	GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, GLES10.GL_TEXTURE_MAG_FILTER, GLES10.GL_LINEAR);

	//Different possible texture parameters, e.g. GLES10.GL_CLAMP_TO_EDGE
	GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, GLES10.GL_TEXTURE_WRAP_S, GLES10.GL_REPEAT);
	GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, GLES10.GL_TEXTURE_WRAP_T, GLES10.GL_REPEAT);

	//Use the Android GLUtils to specify a two-dimensional texture image from our bitmap
	GLUtils.texImage2D(GLES10.GL_TEXTURE_2D, 0, bitmap, 0);
	//Clean up
	bitmap.recycle();

	return textures[0];
}
 

import android.opengl.GLES10; //導入方法依賴的package包/類
/**
	 * このインスタンスで管理しているテクスチャを有効にする(バインドする)
	 */
	@Override
	public void bind() {
//		if (DEBUG) Log.v(TAG, "bind:");
		GLES10.glActiveTexture(mTextureUnit);	// テクスチャユニットを選択
		GLES10.glBindTexture(mTextureTarget, mTextureId);
	}
 

import android.opengl.GLES10; //導入方法依賴的package包/類
private void glBindTexture(TextureHandle texture) {
	if (texture != lastTexture) {
		int id;
		if (texture == null) {
			id = 0;
		} else {
			id = texture.getInternalId();
		}
		GLES10.glBindTexture(GLES10.GL_TEXTURE_2D, id);
		lastTexture = texture;
	}
}
 

import android.opengl.GLES10; //導入方法依賴的package包/類
/**
	 * このインスタンスで管理しているテクスチャを無効にする(アンバインドする)
	 */
	@Override
	public void unbind() {
//		if (DEBUG) Log.v(TAG, "unbind:");
		GLES10.glBindTexture(mTextureTarget, 0);
	}